hex-editor/src/source-loaded-file.h

// source-loaded-file: A file fully loaded to memory
//
// This data source is a normal file entirely loaded to RAM. The flexibility of
// RAM accesses allow us to implement all of the capabilities.

#pragma once
#include "buffer.h"
#include <stddef.h>

typedef struct {
    /* Path to file (owned by this structure) */
    char *path;
    /* Original file size. This is used to determine whether we can save the
       file by a normal overwrite (with expansion) or we need to delete and
       re-create the file to shrink it */
    size_t original_size;
    /* The entire file, as a RAM buffer */
    buffer_t *buf;
    /* Whether the source is dirty (ie. we changed the buffer through a call
       to write()) */
    bool dirty;

} loaded_file_t;

source_t *source_loaded_file_open(char const *path);

source_t *source_loaded_file_new(void);